Probably an easy work problem

  • Thread starter kmart47
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  • #1
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a skier of mass 72.9 kg is pulled up a slope by a motor-driven cable. The acceleration due to gravity is 9.81 m/seconds squared. How much work is required to pull the skier 63.5 m up a 34 degree slope (assumed to be frictionless) at a constant speed of 2 m/seconds squared. Answer in units of J.



HELP me out please:surprised
 

Answers and Replies

  • #2
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calculate the change in gravitional energy.
where must this energy come from?
 

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